TEE COLUMBIA BICYCLE. EASILY MADE PHYSICAL APPARATUS. BY OBO. M. HOPKINS. THE COLUMBIA BICYCLE. A SIMPLE AIR PUMP, scientific american, 1879-01-18

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TEE COLUMBIA BICYCLE. EASILY MADE PHYSICAL APPARATUS. BY OBO. M. HOPKINS. THE COLUMBIA BICYCLE. A SIMPLE AIR PUMP, scientific american, 1879-01-18

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